TennisEdge's AI model finds no betting value in J. De Jong vs M. Zheng (French Open on 2026-05-21) — the market is efficient, with J. De Jong favoured at 1.45.
Independent estimates of who wins, each from a different method. The blend is what the bot prices against the market.
| Method | J. De Jong | M. Zheng |
|---|---|---|
| Elo ratings-based, surface-weighted |
79.5% | 20.5% |
| Machine learning 29-feature gradient-boosted model |
75.6% | 24.4% |
| Blend what the bot actually prices off |
77.6% | 22.4% |
| Market implied de-vigged from the opening odds |
65.9% | 34.1% |
We publish how well these score against the closing market, including where they lose: how accurate are tennis predictions?
| Player | Surface | Elo | Record | Matches |
|---|---|---|---|---|
| J. De Jong | clay | 1752 | 139–88 | 227 |
| M. Zheng | hard | 1772 | 67–35 | 102 |
Our own ratings, computed from match results since 2018. Players with fewer than 5 rated matches are omitted rather than shown at a provisional starting value. Last updated July 21, 2026.
M. Zheng leads 1–0 over 1 meeting. Full record.
| Date | Event | Surface | Winner | Score |
|---|---|---|---|---|
| May 21, 2026 | French Open | clay | M. Zheng | 2 - 0 |
| L | T. Skatov | 2 - 1 | July 21, 2026 |
| L | S. Baez | 0 - 2 | July 16, 2026 |
| W | V. Gaubas | 2 - 0 | July 13, 2026 |
| L | J. Fonseca | 0 - 3 | July 1, 2026 |
| W | R. Hijikata | 3 - 2 | June 30, 2026 |
| L | M. Kecmanovic | 1 - 2 | Aug. 4, 2026 |
| W | K. Nishikori | 2 - 0 | Aug. 1, 2026 |
| L | A. Gea | 2 - 1 | July 30, 2026 |
| W | M. Landaluce | 2 - 0 | July 29, 2026 |
| L | J. Fearnley | 2 - 0 | July 25, 2026 |
All May 21, 2026 results & picks →
Math-only prediction: no LLM calls used